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A quiz based on Dr. David's class 18 lecture

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A&P - Class 18 The Chemical Level Quiz

Questão 1 de 29

1

What is matter?

Selecione uma das seguintes:

  • Anything that occupies space and has mass

  • The amount of electrons in a atom

  • The amount of matter in an object

Explicação

Questão 2 de 29

1

What is mass?

Selecione uma das seguintes:

  • The space that an object occupies

  • The amount of matter in any object

  • The central act of divine worship in the Catholic Church

Explicação

Questão 3 de 29

1

Of the ((92)) naturally occurring elements, how many are in the human body?

Selecione uma das seguintes:

  • 50

  • 26

  • 100

  • 25

Explicação

Questão 4 de 29

1

Of the ((26)) elements in the human body, which are the ones that make up 96% of the body's mass?

Selecione uma das seguintes:

  • Carbon, Hydrogen, Onion, Nitrogen

  • Calcium, Helium, Oxygen, Nipple

  • Carbon, Hydrogen, Oxygen, Nitrogen

  • Carbon, Hydrogen, Oxycontin, Nitrous

Explicação

Questão 5 de 29

1

3.6% of the body's mass contain 8 elements, and the remainder 0.4% are trace elements.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 6 de 29

1

What is a true statement?

Selecione uma das seguintes:

  • Radioactive isotopes are stable and bond to become more complex structures

  • The chemical properties of an atom are a function of it's electrons.

  • Electrons have a positive charge

  • Queen Elizabeth VII of France was a weeaboo

Explicação

Questão 7 de 29

1

How can an element have the same atomic number but a different mass number?

Selecione uma das seguintes:

  • Because they have a different number of electrons.

  • Because they have a different number of protons

  • Because they have a different number of neutrons.

  • Because they are radioactive.

Explicação

Questão 8 de 29

1

Isotopes are...

Selecione uma das seguintes:

  • Atoms of the same elements with different mass number

  • Atoms of the same element with a negative or positive charge

  • Are a positively or negatively charged compound

  • Unstable and destructive

Explicação

Questão 9 de 29

1

What are radioactive isotopes?

Selecione uma das seguintes:

  • Are unstable and decay into a simpler, more stable configuration. In the process, they can decay into a more simple element

  • An electrically charged atom or group of atoms with an unpaired electron in its outermost shell.

  • A substance made of two or more atoms that can be broken down into the two or more different elements

  • derp

Explicação

Questão 10 de 29

1

What is the difference between MASS NUMBER and ATOMIC MASS? (tricky one)

Selecione uma das seguintes:

  • The MASS NUMBER is the sum of the protons and neutrons of the atom. The ATOMIC MASS of an element is the average weight of all its naturally occurring isotopes.

  • The MASS NUMBER is the average weight of all its naturally occurring isotopes. The ATOMIC MASS is the sum of the protons and neutrons of the atom.

  • The ATOMIC MASS is the number of protons in an atom. The MASS NUMBER is the sum of the protons and neutrons of the atom

Explicação

Questão 11 de 29

1

Select all that is true

Selecione uma ou mais das seguintes:

  • The massage table desks are very comfortable to put our feet through

  • Class 18D is the best

  • I can learn everything when I put my mind to it

  • The evolutionary history of cetaceans is thought to have occurred in the Indian subcontinent from even-toed ungulates 50 million years ago, over a period of at least 15 million years. Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.

Explicação

Questão 12 de 29

1

The process of giving up or gaining an electron, resulting in an atom of positive or negative charge is called...

Selecione uma das seguintes:

  • Onionization

  • Anionization

  • Ionization

  • Bunionization

Explicação

Questão 13 de 29

1

Molecules and compounds are both groups of 2 or more atoms. What is the difference between them?

Selecione uma das seguintes:

  • Molecules can consist of atoms of the same or different element. Compounds can only consist of atoms of different element.

  • Molecules can only consist of atoms of different element. Compounds can consist of atoms of the same or different element

Explicação

Questão 14 de 29

1

The mass of an atom is measured by a standard unit called a dalton. A dalton is the equivalent of what?

Selecione uma das seguintes:

  • is equivalent to one sixteenth of the weight of one atom of oxygen.

  • is equivalent to one sixteenth of the weight of one atom of carbon.

  • is equivalent to one sixteenth of the weight of one atom of nitrogen.

  • is equivalent to one sixteenth of the weight of one atom of hydrogen.

Explicação

Questão 15 de 29

1

Two or more atoms interacting to produce a chemically stable arrangement of eight valence electrons for each atom is called:

Selecione uma das seguintes:

  • Cation

  • The octet rule

  • The quartet rule

Explicação

Questão 16 de 29

1

Select the types of chemical bonds

Selecione uma ou mais das seguintes:

  • Ionic bond

  • Covalent bond

  • Hydrogen bond

  • James bond

Explicação

Questão 17 de 29

1

A anion is a POSITIVELY charged ion.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 18 de 29

1

What is an ionic bond?

Selecione uma das seguintes:

  • When 2 atoms joining together share electrons

  • Positively and negatively charged ions attracted to one another forming a bond

  • The bond between Stephen and Kevin

Explicação

Questão 19 de 29

1

Covalent bonds can form between atoms of the same AND different elements and are the most frequent chemical bonds in the body.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 20 de 29

1

Select all that is true for polar covalent bonds

Selecione uma ou mais das seguintes:

  • Electrons are not equally shared

  • Are hydrophobic

  • one part of the molecule is more negative than the other side of the molecule

Explicação

Questão 21 de 29

1

Select all that is true for non polar covalent bonds

Selecione uma ou mais das seguintes:

  • Are hydrophilic

  • Electrons are equally shared

  • No one part is distinctly positive or negative

Explicação

Questão 22 de 29

1

Select all that is true about hydrogen bonds

Selecione uma ou mais das seguintes:

  • The polar covalent bond between hydrogen and other atoms produces hydrogen bonds.

  • They are only about 5% as strong as covalent bonds.

  • Positive and negative charged ions are attracted to one another.

  • The hydrogen bond cannot bind atoms into molecules, but they can establish links between the molecules.

Explicação

Questão 23 de 29

1

What kind of energy is STORED BY MATTER?

Selecione uma das seguintes:

  • Potential energy

  • Kinetic energy

  • Chemical energy

Explicação

Questão 24 de 29

1

Exergonic reactions release LESS energy than they absorb.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 25 de 29

1

Anabolism is a synthesis reaction.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 26 de 29

1

Redox reactions are coupled reactions of oxidation and reduction. What is a) oxidation and b) reduction?

Selecione uma ou mais das seguintes:

  • Oxidation is the gain of an electron. Reduction is the loss of an electron.

  • Oxidation is the loss of an electron. Reduction is the gain of an electron

Explicação

Questão 27 de 29

1

What 2 factors influence the speed of chemical reactions?

Selecione uma ou mais das seguintes:

  • temperature of environment

  • amount of molecules

  • concentration

Explicação

Questão 28 de 29

1

An exchange reaction consists of synthesis and decomposition reactions.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 29 de 29

1

ATP is a molecule that stores energy from the exergonic breakdown of glucose.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

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